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Texas Instruments (TI) Electronic Components Datasheet

54ACT16540 Datasheet

16-BIT BUFFERS/DRIVERS

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54ACT16540, 74ACT16540
16-BIT BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCAS186A – OCTOBER 1991 – REVISED APRIL 1996
D Members of the Texas Instruments
WidebusFamily
D Inputs Are TTL-Voltage Compatible
D Provide Extra Data Width Necessary for
Wider Address/Data Paths
D Provide Inverted Data
D 3-State Outputs Drive Bus Lines or Buffer
Memory Address Registers
D Flow-Through Architecture Optimizes PCB
Layout
D Distributed VCC and GND Pin Configuration
Minimizes High-Speed Switching Noise
D EPIC(Enhanced-Performance Implanted
CMOS) 1-µm Process
D 500-mA Typical Latch-Up Immunity at
125°C
D Package Options Include Shrink
Small-Outline 300-mil (DL) Package Using
25-mil Center-to-Center Pin Spacings and
380-mil Fine-Pitch Ceramic Flat (WD)
Packages Using 25-mil Center-to-Center
Pin Spacings
description
These 16-bit buffers/bus drivers provide a
high-performance bus interface for wide data
paths.
54ACT16540 . . . WD PACKAGE
74ACT16540 . . . DL PACKAGE
(TOP VIEW)
1OE1
1Y1
1Y2
GND
1Y3
1Y4
VCC
1Y5
1Y6
GND
1Y7
1Y8
2Y1
2Y2
GND
2Y3
2Y4
VCC
2Y5
2Y6
GND
2Y7
2Y8
2OE1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48 1OE2
47 1A1
46 1A2
45 GND
44 1A3
43 1A4
42 VCC
41 1A5
40 1A6
39 GND
38 1A7
37 1A8
36 2A1
35 2A2
34 GND
33 2A3
32 2A4
31 VCC
30 2A5
29 2A6
28 GND
27 2A7
26 2A8
25 2OE2
The 3-state control gate is a 2-input AND gate with
active-low inputs so that if either output-enable
(OE1 or OE2) input is high, all corresponding
outputs are in the high-impedance state.
The 74ACT16540 is packaged in TI’s shrink small-outline package, which provides twice the I/O pin count and
functionality of standard small-outline packages in the same printed-circuit-board area.
The 54ACT16540 is characterized for operation over the full military temperature range of –55°C to 125°C. The
74ACT16540 is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
(each 8-bit section)
INPUTS
OE1 OE2 A
OUTPUT
Y
LLL
H
L LH
L
HXX
Z
XHX
Z
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
EPIC and Widebus are trademarks of Texas Instruments Incorporated.
UNLESS OTHERWISE NOTED this document contains PRODUCTION
DATA information current as of publication date. Products conform to
specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all
parameters.
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright © 1996, Texas Instruments Incorporated
1


Texas Instruments (TI) Electronic Components Datasheet

54ACT16540 Datasheet

16-BIT BUFFERS/DRIVERS

No Preview Available !

54ACT16540, 74ACT16540
16-BIT BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCAS186A – OCTOBER 1991 – REVISED APRIL 1996
logic symbol
1OE1
1OE2
2OE1
2OE2
1
48
24
25
&
EN1
&
EN2
47
1A1
46
1A2
44
1A3
43
1A4
41
1A5
40
1A6
38
1A7
37
1A8
36
2A1
35
2A2
33
2A3
32
2A4
30
2A5
29
2A6
27
2A7
26
2A8
11
12
logic diagram (positive logic)
1OE1 1
1OE2 48
1A1 47
2 1Y1
2
1Y1
3
1Y2
5
1Y3
6
1Y4
8
1Y5
9
1Y6
11
1Y7
12
1Y8
13
2Y1
14
2Y2
16
2Y3
17
2Y4
19
2Y5
20
2Y6
22
2Y7
23
2Y8
2OE1 24
25
2OE2
2A1 36
To Seven Other Channels
13 2Y1
To Seven Other Channels
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V
Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to VCC + 0.5 V
Output voltage range, VO (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to VCC + 0.5 V
Input clamp current, IIK (VI < 0 or VI > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
Output clamp current, IOK (VO < 0 or VO > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA
Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA
Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±400 mA
Maximum power package dissipation at TA = 55°C (in still air) (see Note 2): DL package . . . . . . . . . . 1.2 W
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. The maximum package power dissipation is calculated using a junction temperature of 150°C and a board trace length of 750 mils.
2 POST OFFICE BOX 655303 DALLAS, TEXAS 75265


Part Number 54ACT16540
Description 16-BIT BUFFERS/DRIVERS
Maker Texas
Total Page 5 Pages
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